<!DOCTYPE html>
<html>
	<head>
	<meta charset="utf-8">
	<title></title>
	<script type="text/javascript" src="./js/jQuery3.4.1.js"></script>
	<link rel="stylesheet" type="text/css" href="css/bootstrap.min.css"/>
	<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
	<script type="text/javascript" src="js/bootstrap.bundle.min.js"></script>
	</head>
	<body>
		<div class="container">
			<div class="dropdown">
				<button type="button" class="btn btn-success dropdown-toggle dropdown-toggle-split" data-toggle="dropdown">web前端开发技术</button>	
			
			<div class="dropdown-menu">
				<a href="#" class="dropdown-item">html5</a>
				<a href="#" class="dropdown-item">css</a>
				<a href="#" class="dropdown-item">javascript</a>
				</div>
			</div>
			
			<div class="dropright mt-2 ">
				<button type="button" class="btn btn-success dropdown-toggle dropdown-toggle-split" data-toggle="dropdown">web前端开发技术</button>	
			
			<div class="dropdown-menu">
				<a href="#" class="dropdown-item active">html5</a>
				<a href="#" class="dropdown-item">css</a>
				<a href="#" class="dropdown-item disabled">javascript</a>
				</div>
			</div>
		</div>
		<div class="container">
			<div class="dropdown">
				<button type="button" class="btn btn-danger dropdown-toggle my-3" data-toggle="dropdown" >下拉菜单</button>
				<div class="dropdown-menu">
					<h6 class="dropdown-header">菜单标题1</h6>
					<button type="button" class="dropdown-item">酸菜鱼</button>
					<button type="button" class="dropdown-item">蕃茄鱼</button>
					<h6 class="dropdown-header">菜单标题2</h6>
					<button type="button" class="dropdown-item">红烧鱼</button>
					<button type="button" class="dropdown-item">麻辣鱼</button>
				</div>
			</div>
			<div class="dropdown mt-3">
				<button type="button" class="btn btn-warning dropdown-toggle" data-toggle="dropdown">下拉菜单</button>
				<div class="dropdown-menu">
					<p>下面显示一个表单</p>
					<form action="zhuce.php" method="post">
						<div class="form-group">
							<label for="mail" >E-mail</label>
							<input type="email" name="mail" id="mail" placeholder="邮箱" class="form-control" />
						</div>
						<div class="form-group">
							<label for="mail" >Passwd</label>
							<input type="password" name="ps" id="ps" placeholder="密码" class="form-control" />
						</div>
						<div class="text-right">
							<button class="btn btn-success">登录</button>
						</div>
						
					</form>
				</div>
			</div>
		</div>
	</body>
</html>
